Dirigible airship.



C. D. FAHSEL, DECD.

N. mam. ADMINISTRATRIX.

DIRIGIBLE AIRSHIP.

1,291,675, APPLICATION FILED MAY B. 1911- Patented Jan. 14,

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n. FAHSEL. ADMINISTRATRIX.

DIRIGIBLE AIRSHIF.

1,291,675. APPLICATION FILED MAY 8 I31]. Patented Jan. 14,

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CARL D. F AHSEL, DECEASED, LATE OF NEW YORK, N. Y., BY NELLIE FAHSEL,ADMINIS- TRATRIX, OF NEW YORK, N. Y.

DIRIGIBLE Ainsmr.

Specification of Letters Patent. Patented J an. 14, 1919.

Application filed May 8, 1917. Serial No. 167,222.

To all whom it may concern Be it known, that I, NELLrn FAHSEL, a citizenof the United States, and a resident of the city of New York, borough ofManhattan, in the county and State of New York, United States ofAmerica, administratrix of the estate of CARL D. FAHSEL, deceased, latea citizen of the United States and a resident of the city of New York,borough of Manhattan, in the county and State of New York, United Statesof America, as by reference to the duly authorized certificate of theclerk of the Surrogates Court of New York county, N. Y., will more fullyappear, who did in his liftetime invent certain new and usefulImprovements in do hereby declare the Dirigible Airships,

and exact dcfollowing to be a full, clear, scription of said invention.

This invention relates to aerial navigation and has particular referenceto air craft which preferably include one or more gas bags for thepurpose of buoyancy and which also will be provided with means forsteering and stabilizing.

Among theobjects of the invention is to provide an airship of thecharacter above set forth which will embody in its construction'aparachute effect whereby it will be impossible for a serious disaster toresult because of the failure of any of the mechanism or the bursting ofany or all of the gas bags.

A further object is to improve this class of devices in such a manner asto provide for better'control of the machine while in operation and toincrease the safety to the occupants thereof.

The foregoing and other objects of the invention will hereinafter bemore fully describedand claimed and illustrated in the drawings forminga part of this specification in which like characters of referenceindicate corresponding parts in all the views, and in which- Figure 1 isa side elevation of a preferred embodiment of this invention;

Fig. 2 is a bottom plan view of the same;

Fig. 3 is a vertical longitudinal section;

Fig. 4 is a vertical transverse section on the line 44 of Fig. 3;

Fig. 5 is a partial plan view of one of the planes, partly in section onthe line 5-5 of Fig. 4; and

Fig. 6 is a perspective diagram of a portion of the controllingmechanism.

This airship in its preferred form comprises an upwardly arched shell orcasing 10, of any suitable form in cross section, and having an openbottom 11. This shell may be constructed in any suitable mannerincluding a pair of spaced envelops 12 and.

13, the latter being Within the former and both terminating insubstantially the same plane at the bottom. These envelops will, ofcourse, be constructed of suitable light thin material, but ofsufficient strength for their purpose and the space between them willinsure perfect ventilation of the gas bags described below, by theprovision of proper circulation of air within the outer envelop all ofwhich will be better understood as this description progresses.

At 14 are shown diagrammatically a series of gas bags of any usual orpreferred construction carried within the concavity of the shell 10.These gas bags are de signed to be independently filled and the gasthereof controlled by anyusual or well known means, such means parseconstituting no part of this invention.

At the front end of the airship is constructed a compartment 15 for thepurpose of housing the propelling motor, the controlling mechanism andthe pilot or other persons in command of the machine. Operating directlyfrom and in front of said compartment is a propeller 16 of any suitablenature. At the rear end ofthe machine or baggage is shown suspendedcentrally from the bottom of the airship and the same preferablyconsisting of a boat-shaped construction and equipped withself-contained propelling and steering mechanism whereby passengerscontained therein may be conveyed to a place of safety in the event ofthe airship alighting upon the surface of a body of water. The cabin 20may, if de sired, be designed to be detachable from the airship in casesof emergency and be provided with means for making it watertight shouldit become temporarily submerged. Under normal conditions one or moregangplanks 21 may extend from the cabin 20 to a walk 22 leading from oneend of the airship to the other on one or both sides preferably adjacentthe lower end of the inner envelop 13, whereby passengers carried by thecabin 20 or other persons connected with the air craft may pass freelyfrom one part'of the machine to another.

On each side of the machine and pivotally connected thereto adjacent thelower edge is 'a stabilizing device 23. As herein shown,

these devices on opposite sides are similar to each other and eachcomprises a pair of planes '24 extending outwardly in parallel planesfrom a wall 25 which carries a hub 26 through which the device ispivoted upon a short shaft 27 extending outwardly from the side of theshell. These stabiliz- 'ing devices 28 are adapted to be tilted 0n thehorizontal pivots 27 by any suitable mechanism such, for instance, asthat illustrated in Fig. 6 and including a flexible connection 28 havingits ends secured to a bar 29 carried by the wall 25. The intermediateportion of each connection or cable 28 is guided over a suitablearrangement of di rection pulleys 30 and operates around a wheel 31 inthe 'pilot house 15. As indicated in Fig. 6, the rotation of the Wheel31 in "either direction will cause a corresponding operation of both ofthe stabilizing devices. The planes 24 are intended especially for thepurpose of controlling the elevation or descent of the airship and henceare operated in unison, the reverse inclination of these devices notbeing necessary because of the nature of the shell 10 and the buoyantmeans contained therein.

Great difficulty has, heretofore been encountered in the practicaloperation of diri'gible balloons with respect to the irregular expansionor contraction of the several gas bags, and I overcome such difiicultyin this instance by the double envelop construction of the shell andalso by providing ameans whereby the inner envelop may be cooled, ifnecessary, by spraying .the same with water. To this end I, provide apipe 32 which leads from the rear compartment 17,

where, the water, may be carried, upwardly and forwardly toward thepilot house 15,

copies Of'thl-El patent may be obtained for five cents each, byaddressing the Washington, D. G.

such pine being provided with spraying perforations 32 throughout itslength and directed laterally so that the water may be sprayedsubstantially throughout the surface of the inner envelop. Another pipe33, for the conveyance of liquid fuel or the like from the storagecompartment 17 to the pilot house 15 may be provided and extend parallelto the aforesaid pipe 32 or in any other suitable manner.

An airship constructed in accordance with the foregoing description willinsure that in the event of the stoppage of the propelling and steeringdevices from-any cause or the escape of buoyant gas from any of the gasbags 14 it will settle toward the earth at a safe velocity, and byreason of the form and construction of the shell, the airship ries ofgas bags, a shell comprising inner and outer spaced envelops in'clo-singsaid gas bags and insuring thorough ventilation and uniform temperaturethereof, means to control the operation of the airshi andimeans to spraya cooling liquid upon the inner envelop of said shell. v v

2. The herein described airship comprising a shell having inner andouter spaced envelops, said shell having an open bottom, a series of gasbags within the shell and abutting substantially against the innerenvelop, a perforated pipe leading substantially from one end of theshell to the other whereby a cooling liquid may-be sprayed upon saidinner envelop, and means to control the operation of the airship.

3. The herein described airship compris ing a buoyant body including anupwardly arched open bottom shell including a pair of inner and outerspaced envelops, compartments at the opposite ends of said body, and afuel connection from one compartment to the other extending along theshell between said envelops.

Administratrim of D.

the estate of Oar-Z Fahsel, deceased.

. .NELLIE FAHSELL Commissioner of Patents,

